基于FPGA的激光笔辅助教学系统设计与实现  

Design and Implementation of Laser Pointer Instruction-Aided System Based on FPGA

作　　者：刘钢[1] 秦奎[2] 陈刚[1] 

机构地区：[1]上海交通大学继续教育学院E-Learning实验室,上海200030 [2]上海交通大学微纳科学技术研究院微米/纳米加工技术国家重点实验室薄膜与微细技术教育部重点实验室,上海200240

出　　处：《现代电子技术》2011年第2期1-4,共4页Modern Electronics Technique

基　　金：国家"十一五"计划资助项目(2007BAH09B05);上海市科委3G课题(09511500701)

摘　　要：为了实现激光笔与大屏幕的互动,基于常用的OV9650摄像头模块和315 MHz无线收发模块,采用了一种FPGA架构实现激光笔与大屏幕互动的设计方案。OV9650摄像头模块的采集信号由FPGA进行缓存和处理,由它计算出激光点的坐标,之后计算机接收激光点的坐标及激光笔发出的无线控制信号,通过授课主机端的软件实现激光笔与大屏幕的互动。目前该系统已应用于上海交通大学部分智能教室中,效果明显。Based on the commonly used OV9650 camera module and 315 MHz wireless transceiver module, a design of in- teractive system with FPGA to implement the interaction between a laser pointer and the projected display on a large screen was adopted. The digital signal obtained by the OV9650 camera module and the wireless signal received by the 315 MHz wire- less receiver module is processed and cached by FPGA. Then FPGA figures out the coordinates of the laser spot and sends the coordinates and the received wireless signal to the computer. The software on the computer processes the information to realize the interaction between the laser pointer and the projected display on a large screen. At present, this system has been applied in some classroom called smart classroom in Shanghai Jiaotong University.

关 键 词：激光笔互动 亮点识别 FPGA OV9650 无线收发 

分 类 号：TN911-34[电子电信—通信与信息系统]